Adding Phone Numbers Manually Solved

Hi all, I understand that SOTI has a send SMS function, that I'd like to utilize. However, our chosen network provider blocks the functionality that is used to read the number from the SIM itself. Is there any way for me to set the number manually? Or better still import them? I had previously asked our provider to assist, and they imported a list. However, I now recognize this was a custom field "Phone_Number" and as such is not able to be used to access the send SMS functionality. Any advice would be appreciated. Many thanks, Seb